The problem with these kind of experiments and „determinations“ really is that we expect nowadays to be „all-knowing“. It shows the -at this point of time- most plausible route. Valid. But does it help without any sociological perspectives?
Old Roman Stoa for example, dictated people do act accordingly (the famous general comes in mind who actively went back to captivity and death after being freed based on values according to the stoic lifestyle). Not everyone lived according to its teaching, but some did and acted „unnatural“.
So what if those people back then had other beliefs that made them act accordingly „unnatural“ to us nowadays? Till this can be excluded with a certainty, this study is merely a shallow response and let’s people believe uncertainties instead of knowing historical facts.